Eosaurichthys

Eosaurichthys Temporal range: Changhsingian^[1] PreꞒ Ꞓ O S D C P T J K Pg N ↓
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	†Saurichthyiformes
Family:	†Saurichthyidae
Genus:	†Eosaurichthys Liu and Wei, 1988
Binomial name
†Eosaurichthys chaoi Liu and Wei 1988

Eosaurichthys is an extinct genus of saurichthyid ray-finned fish that lived during the late Permian epoch (Changhsingian age) in what is now China.^[1]

Taxonomy

Eosaurichthys is often treated as a subgenus of Saurichthys rather than a genus, with its type species referred to as Saurichthys (Eosaurichthys) chaoi.^[2] The Early Triassic species Saurichthys madagascariensis has been referred to this subgenus as Saurichthys (Eoaurichthys) madagascariensis.^[3]^[4]

Appearance

Eosaurichthys closely resembles its daughter genus, Saurichthys, in both form and morphology. Its body is fully covered by scales, while in Saurichthys the scale cover is reduced.^[2]^[5]

References

^ ^a ^b Sepkoski, Jack (2002). "A compendium of fossil marine animal genera". Bulletins of American Paleontology. 364: 560. Archived from the original on 2011-07-23. Retrieved 2009-04-24.
^ ^a ^b Tintori, Andrea (2013). "A new species of Saurichthys (Actinopterygii) from the Middle Triassic (early Ladinian) of the northern Grigna Mountain (Lombardy, Italy)". Rivista Italiana di Paleontologia e Stratigrafia. 119 (3): 287–302. doi:10.13130/2039-4942/6041.
^ Maxwell, E.E.; Romano, C. & Wu, F.-X. (2021). "Regional disparity in the axial skeleton of Saurichthyidae and implications for axial regionalization in non‐teleostean actinopterygians". Journal of Zoology. 315: 29–41. doi:10.1111/jzo.12878.
^ Silvio Renesto; Fabio Magnani; Rudolf Stockar (2021). "A new species of Saurichthys (Actinopterygii: Saurichtydae) from the Middle Triassic of Monte San Giorgio". Rivista Italiana di Paleontologia e Stratigrafia. 127 (1): 49–71. doi:10.13130/2039-4942/15143.
^ Romano C., Kogan I., Jenks J., Jerjen I., Brinkmann W. (2012). "Saurichthys and other fossil fishes from the late Smithian (Early Triassic) of Bear Lake County (Idaho, USA), with a discussion of saurichthyid palaeogeography and evolution" (PDF). Bulletin of Geosciences. 87: 543–570. doi:10.3140/bull.geosci.1337.{{cite journal}}: CS1 maint: multiple names: authors list (link)

Actinopterygian genera

Kingdom: Animalia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Superclass: Osteichthyes

Gnathostomata

see Gnathostomata
Actinopterygii	see below↓

Actinopterygii

†Austelliscus †Cheirolepis †Cuneognathus †Dialipina? †Kentuckia †Krasnoyarichthys †Ligulalepis? †Limnomis †Meemannia †Moythomasia †Naxilepis? †Orvikuina? †Osorioichthys †Palaeoneiros †Pickeringius †Raynerius †Stegotrachelus †Tegeolepis †Terenolepis?
†Howqualepididae	Donnrosenia Howqualepis
†Mimiidae	Gogosardina Mimipiscis
Post-Devonian taxa	see below↓

Post-Devonian taxa

†Adroichthys
†Aetheretmon
†Agecephalichthys
†Amblypterina
†Ambodipia
†Aneurolepis
†Angatubichthys
†Apateolepis
†Arratiaichthys
†Asarotus
†Australichthys
†Avonichthys
†Beagiascus
†Belichthys
†Bethesdaichthys
†Birgeria
†Bishofia
†Bluefieldius
†Blourugia
†Boreolepis
†Brachydegma
†Brachypareion
†Brazilichthys
†Burguklia
†Carbonilepis
†Caruichthys
†Centrolepis
†Charleuxia
†Chichia
†Coccocephalichthys
†Concentrilepis
†Cornuboniscus
†Cosmolepis
†Cosmoptychius
†Cretolepis
†Cylindrichthys
†Daqingshaniscus
†Disichthys
†Dmitrevichthys
†Drydenius
†Duwaichthys
†Dwykia
†Elpisopholis
†Ganolepis
†Gardinerichthys
†Gardinerpiscis
†Gondwanichthys
†Grandfieldia
†Guaymayenia
†Guntherichthys
†Gyrolepidoides
†Huanghelepis
†Hyllingea
†Illiniichthys
†Inichthys
†Irajapintoseidon
†Itararichthys
†Kalops
†Kansasiella
†Karaunguria
†Kazanichthys
†Kelliaichthys
†Kenderlichthys
†Khantausia
†Kompasia
†Kutaichthys
†Lambeia
†Lanarkichthys
†Lawrenciella
†Leptogenichthys
†Letovichthys
†Lineagruan
†Luederia
†Mansfieldiscus
†Megapteriscus
†Melanecta
†Mesembrioniscus
†Mesonichthys
†Mesopoma
†Ministrella
†Monesedeiphus
†Muensterichthys
†Myriolepis
†Nematoptychius
†Neuburgella
†Notacmon
†Novogonatodus
†Nozamichthys
†Oxypteriscus
†Pacorichthys
†Palaeobergia
†Paphosiscus
†Paradrydenius
†Paralogoniscus
†Peleichthys
†Piratata
†Phanerorhynchus
†Phanerosteon
†Praolepis
†Protamblyptera
†Pseudohaplolepis
†Psilichthys
†Pteroniscus
†Rastrolepis
†Reticulolepis
†Roslerichthys
†Rubidus
†Samarichthys
†Santosichthys
†Sceletophorus
†Schizolepis
†Senekichthys
†Sinkiangichthys
†Sinoniscus
†Sixtelia
†Sphaerolepis
†Spinofacia
†Strepheoschema
†Sundayichthys
†Tanypterichthys
†Tanyrhinichthys
†Tienshaniscus
†Trachelacanthus
†Trawdenia
†Turgoniscus
†Ufalepis
†Urosthenes
†Usclasichthys?
†Uydenia
†Uydenichthys
†Varialepis
†Wayaobulepis
†Westlepis
†Whiteichthys
†Willomorichthys
†Woodichthys
†Xingshikous
†Yogoniscus
†Yaomoshania
†Zhongweilepis

†Acrolepidae

Acrolepis
Acropholis
Challaia
Kasanilepis
Namaichthys
Plegmolepis
Progyrolepis?
Watsonichthys

†Aeduellidae

Aeduella
Bourbonnella
Decazella
Neslovicella
Platysella
Puertollanichthys
Schafeevus
Spinarichthys
Westollia

†Aesopichthyidae

Aesopichthys
Proceramala

†Amblypteridae

Amblypterus
Daphnaechelus
Korutichthys?
Lawnia
Paramblypterus
Tchekardichthys
Tholonosteon
Tholonotus

†Bobasatraniiformes

Dorypterus
Bobasatraniidae	Bobasatrania Ebenaqua Ecrinesomus?

†Canobiidae

Canobius
Schaefferius

†Discordichthyidae

Discordichthys
Geryonichthys
Mamulichthys
Mutovinia

†Eigiliidae

Eigilia
Strelnia

†Elonichthyidae

Alilepis
Elonichthys
Palaeostrugia?
Meisenheimichthys
Rhabdolepis?

†Eurynotiformes

Mesolepis Paramesolepis Proteurynotus Wardichthys
Amphicentridae	Amphicentrum Cheirodopsis Eurynotus
Styracopteridae	Benedenius Fouldenia Styracopterus